a growing number of selfheating packages is trying to infiltrate that expanding outdoor market.  the exothermic chemical reaction, which is the heart of the selfheating packaging, is a result of lime reacting with water generating a substantial heat output. however this selfheating source is outdated, incorporates some serious risks, and isn&rsquot offering the required results or not even suitable for solid food. furthermore it makes for weighty beverage cans.  although the selfheating technique of heatgenie comes from a solid fuel source, it still has the same disadvantages as mentioned above. sourcehttpbestinpackaging.com20121203selfheatingpackagingcontainerspart1
